2004-09-17 Jeffrey D. Oldham <oldham@codesourcery.com>

[pf3gnuchains/gcc-fork.git] / gcc / c-common.c

diff --git a/gcc/c-common.c b/gcc/c-common.c
index 4749410..2b8ad80 100644 (file)
--- a/gcc/c-common.c
+++ b/gcc/c-common.c
@@ -1196,7 +1196,7 @@ verify_tree (tree x, struct tlist **pbefore_sp, struct tlist **pno_sp,
 {
   struct tlist *tmp_before, *tmp_nosp, *tmp_list2, *tmp_list3;
   enum tree_code code;
-  char cl;
+  enum tree_code_class cl;
 
   /* X may be NULL if it is the operand of an empty statement expression
      ({ }).  */
@@ -1345,39 +1345,32 @@ verify_tree (tree x, struct tlist **pbefore_sp, struct tlist **pno_sp,
        add_tlist (pno_sp, t->cache_after_sp, NULL_TREE, 1);
        return;
       }
-    default:
-      break;
-    }
 
-  if (cl == '1')
-    {
-      if (first_rtl_op (code) == 0)
-       return;
-      x = TREE_OPERAND (x, 0);
-      writer = 0;
-      goto restart;
-    }
-
-  switch (cl)
-    {
-    case 'r':
-    case '<':
-    case '2':
-    case 'e':
-    case 's':
-    case 'x':
-      {
-       int lp;
-       int max = first_rtl_op (TREE_CODE (x));
-       for (lp = 0; lp < max; lp++)
-         {
-           tmp_before = tmp_nosp = 0;
-           verify_tree (TREE_OPERAND (x, lp), &tmp_before, &tmp_nosp, NULL_TREE);
-           merge_tlist (&tmp_nosp, tmp_before, 0);
-           add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0);
-         }
-       break;
-      }
+    default:
+      /* For other expressions, simply recurse on their operands.
+         Manual tail recursion for unary expressions.
+        Other non-expressions need not be processed.  */
+      if (cl == tcc_unary)
+       {
+         if (first_rtl_op (code) == 0)
+           return;
+         x = TREE_OPERAND (x, 0);
+         writer = 0;
+         goto restart;
+       }
+      else if (IS_EXPR_CODE_CLASS (cl))
+       {
+         int lp;
+         int max = first_rtl_op (TREE_CODE (x));
+         for (lp = 0; lp < max; lp++)
+           {
+             tmp_before = tmp_nosp = 0;
+             verify_tree (TREE_OPERAND (x, lp), &tmp_before, &tmp_nosp, 0);
+             merge_tlist (&tmp_nosp, tmp_before, 0);
+             add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0);
+           }
+       }
+      return;
     }
 }